In a content type there are tabs at the bottom for publishing options, add menu item, url alias, comments, etc. You can set defaults/access to these options when you create the content type. But what if you want to give the superadmin access to these options but not a lower level admin? And do this on a per node basis?
For example, I don't want the lower level admin to change the URL alias, publishing settings, or the menu position on a top section node, ie xyz.com/about. But he can make a revision.